Supporting-bracket for switch mechanism



. H. F. KRANTZ. SUPPORTING BRACKET FOR SWITCH MECHANISM. APPLICATION FILED AUGJ. 1918. P I 1,399,491 atented Dec, 6, 1921.

2 SHEETS-SHEET I- va azg" H. F. KRANTZ. SUPPORTING BRACKET FOR SWITCH MECHANISM. APPLICATION FILED AUG-5. 191a.

Patented Dec. 6, 1921.

2 8HEETSSHEET 2.

X I ED STATES TUBING COMPANY, INC., OF BROOKLYN, NEW YORK, A CORPORATION OF NEW roan.

SUPPORTING-BRACKET FOR SWITCH MECHANISM.

Specification of Letters Patent.

Patented Dec. b, 1921.

Application filed August 5, 1918. Serial No. 248,323.

signed particularly as an improvement upon the supporting bracket shown and described in said co-pending application.

An object of the present improvement is to provide a supporting bracket which may be more cheaply and easily manufactured and which will serve its purpose of properly spacing certain elements of the switch mechanism with a more uniform accuracy than the supporting bracket over which it is an improvement.

A further object is to provide a supporting bracket which will afford ample protection for parts of the switch mechanism and thereby render it possible to omit a protective member employed in the corn struction shown in said co-pending application.

A more detailed object is to provide a supporting bracket of the kind indicated made up wholly of a single piece of sheet metal bent and otherwise shaped to provide all of the necessary features thereof.

Other objects and aims of the invention,- more or less specific than those referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles, constituting the invention, and the scope of protection contemplated will be indicated in the appended claims.

In the accompanying drawingswhich are to be taken as a part of this specification,

bracket constructed in accordance with this invention, and diagrammatically representing the same 111 association with certain of the parts to wh ch 1t s connected,

Fig. 2 is an upper edge view of the bracket shownin Fig. 1, and also illustrating diagrammatically certain of the parts with which it is connected as said parts are seen from above, and r Fig. 3 is a front edge view of the bracket, this is also diagrammatically representing certain of the parts with which the bracket is connected.

In order to render the purpose of the present improvement more clearly apparent, it may be stated that the switch device shown in the above mentioned co-pending application includes a pair of switch blades in a vposition between two walls so that the switch blades are guarded and protected by said walls. The switch blades are pivoted at their mid-portions and are adapted to swing their opposite ends into and out of engagement with stationary contacts carried by the two walls respectively. Access may be had to the space between the walls only by removing one of the walls.

The successful operation of such a device, of course, depends upon the proper positioning of the stationary contacts relative to the swinging blades. Where the blades are intended to swingfor making contact at dilferent times relative to each other, the necessity for accuracy in the positioning of the contacts, as is the case in said copending application, is more evident.

The structure shown in said co-pending application includes a supporting bracket for the blades and for the two walls, but

this bracket is made up of a plurality of separately formed elements connected together by rivets or the like. It has been found, however, in practice in manufactun ing a large quantity of the devices, that the component parts of the supporting brackets are seldom assembled with the degree of accuracy necessary to insure proper positioning of the walls and the switch blades when said walls and blades are connected to the supporting bracket.

The present device entirely over-comes this difficulty since, by reason of its being a single piece of pressed metal, any number ofsimilar pieces identically shaped may be made from the same dies.

Referring to the drawings for describing in detail the structure which is illustrated thBI'6lI1,tl1e reference character L indicates the supporting bracket, The reference char- HUBERT IF. KRAN'IZ, OF BROOKLYN, NEW YORK, ASEIG'NOJR, TO KEAN'JJZ MANUFAG- i acter G indicates one of the walls. This may be referredto as the rear, or supporting wall. Thereference character H indicates the second wall which may be referred to as the front, or guard wall. These parts are *all contained within a casing 1 having a door 2 at its front side spaced from the wall" H, to provide a compartment in front 'of' said wall H suitable for containing lel wi th said walls, and being pivotally supported at their opposite ends in supporting brackets at least one of said brackets, as L, being constructedin the manner now to be described in detail.

- i The supporting bracket L is made. up of a single elongated piece of sheet metal positioned to extend betweenthe walls, G and H. ,A right angularly'disposed flange 6 is ,forrnedfat its re.ar edge, said flange, lying flat against the wall G and being. connected thereto'by suitable bolts, or rivets 7 The wall G is'fixed'rigidlyfwithin the easing, as by nieansof bolts 8,-and serves as a permanent support for thebracket L.

' At its-upper and lower ends the of "sheet metal is formed with short extensions 9 and 10, and each of said extensions is provided with a right angularly disposed flange 11 at its rear edge, the two flanges 11 being in alinement with each other and ina plane parallel with the flange 6. These flanges ill serve for the attaohment of the front wall H, said front wall being connected thereto by suitable screwsfor bolts 12 which enter suitably threaded holes 13 1 formed through the flanges. The bearing apertures,

as 14-, for receivingthe adjacent endsofthe carriersf are formed through the interme diate or body portion of the piece of sheet metal in; a proper position between the planes oftheflanges'6 and 11. V

I Since all' of the "bracketsare when a given setof dies, the flanges 6 and llare uniformly spaced and the aperturesl lialso uniformly spaced with respectto said flanges.

It necessarily follows thatthewalls, to be connected with said flanges, will. ,a,ll stand correctly to cooperate with the switches sup ported insaid apertures.,.

,A further ape uraw is' pr iiid safe fromthe upper aperture 14; adaptedto supporn-the sta o a y; and. i the la ers p ating the pperc rrisr 1am a swee etlfiis"l k wi elprovi l d.telis i ih mere .mentsoi hen sele-r enai tenel' i Irmvided for supporting ananti-friction roller 18 against which the operating element 19, for the lower carrier 5, may enga e. The apertures 15, 16 and 17, being formed in the same piece of material as theapertures 14:, and being formed at the same time, of course, said apertures 15, 16 and 17 are always correctly positioned with regard to the apertures 14. p

The front portion of the piece of sheet metal projects forwardly beyond the plane of the flanges 11, and the forward edge is provided with a right angularly disposed flange 20, This flange 20 serves as a guard member beyond the forward face of the wall The wall H attached to the flanges l1, is neces sarily positioned with its edge, as 21,. spaced away fromthe main, or body part 22 of the bracket so as to accommodate the switch; operating mechanism 23 therebetween as most clearly seen in Fig, 2,,and the flan e 20 serves asaguardtoprevent the accic ental insertion of a tool or the like into engagementwith the switch blades or other parts, through theopenin'g between the surface 21 and the part 22 of the bracket. I

The flanges l1v may be extended beyondthe flanges. (i and 20 so as better to facilitate the provision of the space between the parts 2liand22. If necessary theflange 20 maybe formed with a suitable opening 24there through for accommodating ,a protruding portion ofthe switch operating mechanism. It will be noted that each of the flanges 6, 11 and 20 above describedallprojectin the same dire'ctionnpon the bracket, hence they may be all formed byasingle operation. If found necessary, a reinforcing bracket 25 may be positioned to furnish additional support for the pivot shaft of the roller l8. lVhile, as above suggested, the bracket -L is supported by the wall andin turn sup PO aH, it is apparent, however, that this invention is not limited to. thisspe cific detail as the essential characteristic of the invention resides in the fact that. the bracket Lsupports both of the walls in a given relation to each other and to the switch blade between them. H I 1;

ts many changes could be made. in this construction without departing from the scope of the. inventionasdefined in the following claims, it is intended that all matter contained in the above description or shown in the accompanying drawings, shallbe in terpreted as, illustrative only and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1.- In aswitch.mechani smv. comprisin g a pairv of walls, spaced apart, a,. 'c ontact, ,suppo t byb w id W ll a esw blade intermediate .said walls movable into and. out 'or. i agemena with said ,QQDQLQT, the combination therewith of a supporting bracket for said switch blade and said two walls, said supporting bracket comprising a single piece of material shaped to provide attaching means for each of said elements and having a laterally projecting flange formed thereon serving as a guard member for said switch blade.

2. In a switch mechanism comprising a pair of walls spaced apart, a contact supported by one of said walls, and a switch blade intermediate said walls movable intoand out of engagement with said contact, the combination therewith of a supporting bracket for said switch blade and said two walls, said supporting bracket comprising a single piece of material bent to provide parallel flanges thereon spaced apart and adapt ed to be connected with said walls, and said piece of material having-a portion extending beyond the space between said flanges constituting a guard member for said switch blade.

3. In a switch mechanism comprising a pair of walls spaced apart, a contact supported by one of said walls, and a switch blade intermediate said walls movable into and out of engagement with said contact, the

combination therewith of a supporting bracket for said switch blade and said two walls, said supporting bracket comprising a single piece of material bent to provide parallel flanges thereon spaced apart and adapted to be connected with said walls, and said piece of material having a further flange formed thereon constituting a guard member for said switch blade.

i. In a switch. mechanism comprising a pair of walls spaced apart, a contact sup ported by one of said walls, and a switch blade intermediate said walls movable into and out of engagement with said contact, the combination therewith of a supporting bracket for said switch blade and said two walls, said supporting bracket comprising a single piece of material bent to provide parallel flanges thereon spaced apart and adapted to be connected wit-h said walls, and said piece of material having a portion extending beyond the space between said flanges and provided with a further flange substantially parallel with said first flanges adapted to constitute a guard member.

5. In a switch mechanism comprising a pair of walls spaced apart, a contact supported by one of said walls, and a switch blade intermediate said walls movable into and out of engagement with said contact, the combination therewith of a supporting bracket for said switch blade and saidtw'o walls, said supporting bracket comprising a single piece of material having a plurality of flanges formed thereon, certain of said flanges having means for the attachment of said walls, and another of said flanges con stituting guard means for the switch blade.

6. In a switch mechanism comprising a pair of walls spaced apart, a contact supported by one of said walls, and a switch blade intermediate said walls movable into and out of engagement with said contact, the combination therewith of a supporting bracket for said switch blade and said two walls, said supporting bracket comprising a single piece of material having a plurality of flanges formed thereon all projecting in a common direction and being substantially parallel to each other, certain of said flanges having means for the attachment of said walls, and another of said flanges constituting guard means for the switch blade.

7. In a switch mechanism comprising a pair of walls. spaced apart, a contact supported by one of said walls, and a switch blade intermediate said walls movable into and out of engagement with said contact, the combination therewith of a supporting bracket for said switch blade and said two walls, said supporting bracket comprising a single piece of material having a pair of flanges formed thereon for supporting said two walls, one of said flanges being extended to support its respective wall in a position. with said wall spaced from the main portion of said piece of material so as to provide a space to accommodate operating means for the switch blade, and said piece of mate rial having a further flange formed thereon disposed to constitute a guard member with respect to said space.

In testimony whereofl aiflx my signature in the presence of two witnesses.

HUBER-T F. KRANTZ.

Witnesses Enrrrr Ross, W'M. WERNER. 

